Issued Patents 2020
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10822881 | Split roller cone and PDC composite drill bit | Jialin Tian, Yinglin Yang, Hongzhi He, Lin Yang, Jie Xiong +2 more | 2020-11-03 |
| 10544799 | Centrifugal compressor gas-supplementing structure and compressor | Nan Jiang, Zhiping Zhang, Ruixing Zhong, Caiyun Jiang, Rong Xie +4 more | 2020-01-28 |